diff --git a/README.md b/README.md
index 883bc826..5bc80460 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Key Features:
 
 - support string, list, hash, set, sorted set
 - ttl
-- publish/suscribe
+- publish/subscribe
 - geo
 - aof and aof rewrite
 - Transaction. The `multi` command is Atomic and Isolated. If any errors are encountered during execution, godis will rollback the executed commands
diff --git a/README_CN.md b/README_CN.md
index d51b03d1..37b4f7e3 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -12,6 +12,7 @@ Godis 是一个用 Go 语言实现的 Redis 服务器。本项目旨在为尝试
 关键功能:
 - 支持 string, list, hash, set, sorted set 数据结构
 - 自动过期功能(TTL)
+- 发布订阅
 - 地理位置
 - AOF 持久化及AOF重写
 - 事务. Multi 命令开启的事务具有`原子性`和`隔离性`. 若在执行过程中遇到错误, godis 会回滚已执行的命令
diff --git a/datastruct/lock/lock_map.go b/datastruct/lock/lock_map.go
index 427d68c0..068a6051 100644
--- a/datastruct/lock/lock_map.go
+++ b/datastruct/lock/lock_map.go
@@ -127,6 +127,7 @@ func (locks *Locks) RUnLocks(keys ...string) {
 	}
 }
 
+// RWLocks locks write keys and read keys together. allow duplicate keys
 func (locks *Locks) RWLocks(writeKeys []string, readKeys []string) {
 	keys := append(writeKeys, readKeys...)
 	indices := locks.toLockIndices(keys, false)
@@ -146,6 +147,7 @@ func (locks *Locks) RWLocks(writeKeys []string, readKeys []string) {
 	}
 }
 
+// RWUnLocks unlocks write keys and read keys together. allow duplicate keys
 func (locks *Locks) RWUnLocks(writeKeys []string, readKeys []string) {
 	keys := append(writeKeys, readKeys...)
 	indices := locks.toLockIndices(keys, true)